Sera 250ml Immune Probiotic GranulesSera Immune Probiotic Granules 250ml are slow sinking fish food granules formulated to support strong immunity, healthy growth and efficient digestion in ornamental fish over 5 cm in length. Key Features Enriched with probiotic bacteria to stabilise intestinal flora High protein content (over 50%) to promote healthy growth Supports immune strength and enhances natural colouration Slow sinking granules suitable for mid and bottom feeding fish Granules